The Christian's great interest : Divided into two parts; the first whereof containeth the trial of a saving interest in Christ. The second pointeth plainly forth the way in which this interest is enjoyed, and the glorious consequences of it. By Mr. William Guthrie, minister of the Gospel at Finwick. To which is prefixed, a large account of his life, &c. by way of introduction, by the late Rev. Mr. William Dunlop; and a preface by the late Rev. Mr. Trail, with some account of the author from Mr. Wodrow's history.